same here, i just started building some kits.I have for several years been building a lot of the Master Grade & Perfect Grade Gundam kits but hadn't actually seen any of the series, save for a few random episodes of 00 that were on West TV a few years back. Bought the DVD's of Unicorn (seven approx. one hour episodes) and to be honest none of it made any sense, then someone told me it follows on from previous series, so there's a lot of backstory I'm missing. Some amazing animation in it though.
Currently slowly going through Seed on YT and it seems to be a bit easier to understand. Just reached Ep.15 which from what I can gather is the start of Seed season 2 and goes back in time a bit to explain some of the history of why things are happening.
Ultimately though I'm in it for the model kits...
Where do you purchase your kits from?