Hi there and welcome!
In terms of tips and tricks, it really depends on what type of tank you have and most of them you'll pick up by yourself, you'll most likely even develop your own ones!
Anyway, here are a few:
1) When ever doing water changes, put a towel down first, regardless where the tank is. I bought a pair of bright orange towels from Tesco and they now live in my water change bucket. When ever I'm doing maintenance, I just pop one down in front of the tank and use the other to dry myself as I go along.
2) Get some large buckets. Again, it depends on your tank but I always buy the largest buckets I can to make changing more water easier.
3) Get a gravel siphon or at least some long tubing.
4) Mix your dechlorinator in with the water as it's going into the bucket. I take my showerhead apart, whack that into the bucket, let it start filling up and then throw in my tapsafe.
5) Make sure you've got something to pour the water back into the tank with, I use a 2L jug. Ideally aim for larger ornaments as this will disperse the water less, keeping that lovely "just-cleaned" tank the way it should be.
6) In terms of temp of the water, just add a quick blast of hot in there. A few degrees difference doesn't matter, but a difference of 10C in a 50% water change will most likely shock a lot of fish.
7) Clean up as you go along.
8) Make sure your heater is turned off before it goes below the water line, unless you want exploding glass in your tank.
9) Same goes with filter, but if cleaning your filter out, just make sure nothing dries out, or all your good bacteria will die and so will your fish in turn.
Those are the basics, everything else depends on your tank.
Hope this helps.