go to the dollar store and get sterile soil without any fertilizer...no micronutirents...Nothing! then go to wally's or the garden shop and buy some peat moss and perlite. you can start your seeds right in a small pot for the 1st 2 weeks in this mix without the worries of nute burn on the tender rootless sprouts.
Mix Values:50%soil-25% peat-25%perlite

buy some general hydroponics 3-part flora nova series. don't let the hydroponics label fool ya. this stuff works great on soil, and it is as inexpensive as you can get. Will last you a long time for small soil grows. Probably the overall most popular nutrient program on the market.
Mix your nutes at 5ml per gallon each part and you will be real happy.
Regimen. Nutesph6.5..waterph6.5...Nutesph6.5...waterph6.5.. .etc.

Hope this helps you. Let us know what you decide.