Have you read anything about vegetarian nutrition? I'd recommend something like "Eat to Live" (which is actually vegan). I think there are other books that might be available at a local library.
I get about 100g protein on a daily basis but it varies. I think I calculated the US RDA for protein for my weight and it was around 50g of protein recommended.
Here are a couple good sites to look at:
http://www.vrg.org/nutrition/protein.htm
http://www.vegparadise.com/protein.html
Great protein sources
Beans - I eat beans every day, multiple times per day. Tofu and edamame also fall in the 'beans' category and are fairly inexpensive.
Whole grains - Amaranth and quinoa are complete proteins but if you eat a variety of foods, you don't have to worry about complete proteins. Couscous, Oatmeal, corn, etc all provide some protein.
Leafy greens - All veggies have protein, the leafy green ones tend to have a higher percentage of protein.
Fruit - fruit tends to be low on the protein scale but there are a couple good choices including bananas
Nuts - good fats and protein
Homemade meat replacements - Seitan is actually pretty cheap to make and easy to do. It utilizes wheat gluten and is one of the basic forms of commercial meat subs.
Here are a few recipes to try:
http://blog.fatfreevegan.com/2007/05...itan-ribz.html
http://www.postpunkkitchen.com/forum...c.php?id=15959
http://www.everydaydish.tv/index.php...ow&category=25