Good for you! Organizing photos is one of the most daunting tasks so you are a head of the game! The two most important qualities in scrapbook supplies is
1) that it's acid free and lignin free and
2) that you like them. Don't get carried away, all to often I see people buying a TON of stuff and then they never use it. I would consider the basics to be:
1) an album -- decide if what size you want to scrap (eg. 6x6, 8.5x11, 8x8, or 12x12.) I'd say 12x12 is pretty much the standard but many of my new scrapbookers start with 6x6 because it's less overwhelming for them.
2) Acid Free Adhesive -- I like Dotto or SNAIL adhesive (from Stampin' Up!)
3) Assorted Patterned Paper and cardstocks to use as your page and as embellishments -- please make sure these are acid and lignin free. (Acid and Lignin will, over time, cause the decay of your photos -- yellowing etc. Most of Stampin' Up!'s cardstocks are also buffered -- it's like an antacid for your scrapbook it helps to prevent something called acid transfer.)
4) An Alphabet Stamp Set – reduces the need to buy expensive stickers that can only be used once.
5) A selection of Acid Free ink pads to change the color of your alphabet stamps.
6) A Paper Cutter
This should at the very least, get your started. You might want to also purchase an idea book or scrapbook magazine to get the creative juices flowing. Let me know if you have any other questions or need more guidance.
Independent Stampin' Up! Demonstrator