I very strongly recommend that a new grower start with the best quality SOIL you can afford. The medium will make or break your first grow while you are learning! A forgiving medium is GREAT for a new grower. To start your seeds, a fine-textured unfertilized soil is necessary and any 'seedling starting mix' from a garden store is acceptable. After the first 2-3 weeks, a soil that is unfertilized or very lightly fertilized with organics is best. Composted humus mixed with perlite, 'happy frog' brand soil, or even miracle gro organic choice with extra perlite are all possibilities.
When you learn more about growing, you can build a fully functional hydro system that will fit the space you have for MUCH cheaper than any you can buy, and it will work just as well (or better, because you built it CUSTOM).
For seedbanks, check out our sponsors (shameless plug! ). Even bagseed that came from a bag that you are sure is an indica or indica hybrid (couchlock, body effects, sleepy, numbing) will work for a first grow.
For strains, the easiest 'classic' indoor noob strains that give great product and grow under even not-so-perfect conditions are skunk #1, Northern Lights #5, Pure Afghani, Pure Power Plant (my personal fave of all these, and a commercial cashcropper's DREAM to boot!), and Hindu Kush.
Read around- there's a link in my siggy that will also help get you going.