Have a look here
http
/www,plantgeek.com
It should give you some ideas as to plant requirements and ease of keeping
Personally if I was starting Id get some of the easy stuff
Vallis /crypts and anubias
You can also go for java moss or java fern which you attach to bogwood/rock until the roots take hold.Nearly impossible to kill.
The above site gives a choice of foreground/midground/background or floating.
Id advise you to plant gradually and not buy a heap of different plants at once.There is no point in buying a plant which likes soft water if you have veryhard water.Theres also no point in buying plants which require very bright light if yours is low.
This is very general info and if you look in the planted section you should pick up more detailed information
Good luck