Or anyone else starting up again with light weight backpacking.. there is a wealth of information here. Let me summarize the advice I found most useful..
Start with a base layer top, bottom, socks, gloves, and watch-cap of merino wool or synthetic. Top and bottoms come in weights of 1,2,3, and 4, but sometimes go by other names. IMO, buy quality from Smartwool, Ibex, Icebreaker, or Montbell. Get the top in 1/4 zip for venting options. (that's 5 items)
Hiking pants; zip-off nylon type are very versatile. An example are REI Sahara(s). (1 item)
Add a synthetic or down lofting insulation layer; top and bottom. For example, Montbell Thermawrap parka and pants. (2 items)
Add a breathable windshirt such as the Patagonia Houdini. (1)
Last, a lightweight waterproof breathable shell such as TheNorthFace DIAD jacket and 1/4 zip Golite Reed pants. (Or TNF full zip Hyvent pants for year-round footwear compatibility). Speaking of shells, add shell gloves also.(3 items)
These are the 12 items I recommend to someone getting into (or back into) outdoor activities. Carrying fewer but more versatile items results in a lighter pack, and if you watch the deals (eg. steepandcheap.com), not so expensive.
Footwear is another issue, but consider Inov-8 390 boots at only 28 ounces a pair.
If I had known this simple advice, and stuck with quality brands, I could have saved quite a bit of money and time..