Hi ravkular and Welcome to the beginners section!
Really glad to see Wills got to you quickly this morning as I saw your post while eating breakfast but knew I wouldn't have time for it as the initial explanations always take longer and I had to run. He may have caught you before you went out and made the big mistake! The LFSs are really just for our supplies and fish and most of us here have learned the sometimes difficult restraint of not taking advice when in them.
Congratulations on making the decision to Fishless Cycle! Its probably the very best hands-on way to learn the "Nitrogen Cycle" and that's probably the most core aspect of the hobby. That knowledge will serve you throughout your time in the hobby, the learning going beyond just the issue of your first cycled tank. The best way to do a fishless cycle is interactively here in the beginners threads. If you read others threads you will quickly see we always have several fishless cyclers going through "the process."
First, to touch on your two immediate questions: If you mean by "air pump" your filter, then be aware that the filter should run 24/7. If you mean a separate air pump with airstones or other decorative air bubblers then that's a different question. Bubbler systems are almost completely a decorative thing for humans. They do not add to the oxygen in the water nearly as significantly as things that move more of the surface water, typically a filter outlet pipe directed at the surface. Nonetheless, airstones can help to well the bottom water up a bit, aiding in overall circulation and to the extent that the bubbles disturb the surface, they are helping a little with oxygenation. Since fresh oxygen is one of the things the beneficial bacteria in the filter need, it becomes a good thing for the fishless cycle, in a small way. If you have a noise problem (air pump in bedroom for instance) it's fine to turn it off at night, but if noise is not a problem then leave it on at all times.
Plants are, in my opinion, even a somewhat more difficult topic with a lot of aspects than fishless cycling or fish themselves. So the thing to keep in mind is that you are starting a learning process on them and that there are good articles to read at the top of the "planted tank" forum. Being a beginner and having a small tank, your approach will no doubt be what we call "low-light" (this is a method, with a number of details to master.) It will be important to identify low-light "easy" plants and I'll not mention suggestions yet as the smallness of the tank will have an impact on choices and some of our members may thus have special suggestions along the way. The type and wattage of your tank light will be of importance.
OK, with those two questions out of the way for now, let's get back to the startup of fishless cycling. The most important piece of equipment a beginner should have, maybe even before a tank, lol, is a good liquid-reagent based water test kit. Its purpose is as much for learning as for using. Most of us like and use the API Freshwater Master Test Kit but the Nutrafin Mini-Master can also serve, though the lingo we use around here is often about the API one. The tests in the kit are for Ammonia, Nitrite(NO2), pH and Nitrate(NO3). We also visit the pharmacy and look for two graduated syringes (ideally like a large eyedropper with squeeze bulb but marked in millimeters, but there are various things that will work.
The other next thing on our chemistry list is the finding of simple, pure, household ammonia. This is harder than it sounds and can be a bit of an adventure. On the forum we all get a kick out of hearing about each person's hunt for the right stuff. In the UK our most successful place is Boots (others are HomeBase, B&Q, RobertDyas) and in the USA its Ace Hardware.) The ammonia is sold as a "generic" cleaning solution and so is not aimed at fish hobbyists of course - we have to watch out because we don't want dyes, fragrances, surfactants or soaps in it. If we can see in it we want bubbles to only last 2 or 3 seconds after shaking, just like water. Products with soap or surfactants will often foam when shaken. If you haven't studied the "Nitrogen Cycle" article by BTT yet, you can just consider the ammonia to be "food" for the two species of bacteria we're trying to grow.
One other thing should be considered before starting: your filter. Let us know the type and model and each of the types of "media" (sponges, loose substances, floss, etc.) in the filter. Much to the surprise of beginners, tropical fish hobbyists don't necessarily accept what the manufacturers put in the filters but instead prefer sometimes to make changes and customize their filter. The media chosen by the manufacturers has become more of a way to market repeat purchases at the pet shop than necessarily the filtration material that best suits the hobbyist. We divide media into 3 types: media primarily for mechanical filtration (catching of debris), for biological filtration (the magic that our bacteria and cycle are all about), and lastly, chemical filtration, which is a special case and is used optionally depending of various situations one can be in.
Let us know where you stand with your progress and on the homework side, be sure to be reading the Nitrogen Cycle article as well as RDD's Fishless Cycling article that you've already been pointed to. There's a nice tank startup article by Miss Wiggle in there somewhere too!
~~waterdrop~~
