You are asking for a lot of information. If I had the time, i could spend an hour or so spoonfeeding you, but I don't, so I won't. If you are new to planted tanks, try reading up in the past threads (there is one thread on base fert/gravel just a few steps below), read the very first thread in the Aquatic FAQ, and look through good info sites like www.thekrib.com, and sites like www.tropica.com, www.dupla.com, www.dennerle.de and www.vectrapoint.com.
There are good and cheap, as well as good and expensive base fertilisers and plain gravels. I don't own a shop so I don't know the prices. Maybe it's a far better idea to actually go the shops and see what they have, ask the price and note down the brand, AND THEN post again for the forummers' views (why didn't I think of that!!). That might be more useful as a starting platform for discussion for everybody.
If you plan to use just liquid fert, why bother with soil and base fert then? Read up the countless threads in the planted forum and Aquatic FAQ on fertilisers, and you will probably start off on a better footing.
That cost me about 10 minutes of Surf time, with little spoonfeeding, but lots of pointers to where you can actually research and ponder at leisure. Sure beats hammering out 20-30 minutes worth of stuff that already exists out on the Net or in a good book (by the way, may I recommend Aquarium Plants by Ines Schuermann, available at good bookstores and some LFS - spend the $20 and save yourself a load of $$$ and heartache on bad purchases and worse decisions further on).
Have a nice day!!!
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