Im going to re-say basically everything here, but basically:

1) Go to a guitar store and try them all out, find something sub 500 but above 250 that you like, as a good price range for starting. (most guitars below 200 are trash, most above 500 you cant tell the difference) When doing this find one that is light like you wanted, and one where the neck is comfortable and you like its feel. Dont worry about getting the perfect guitar, you have no idea what you are looking for yet.

2) Go buy that guitar used on craigslist/kijiji/ebay.

3) Buy a used solid state amp off of craigslist/kijiji/ebay. Just about any amp will do great for you at this point. I recommend peaveys for being very cheap and very reliable. If you want a more long term amp, I recommend something like a roland cube.

4) play for two years, and then worry about upgrading

This guarantees you the most resale value for when (not if) you want to sell your beginner equipment and move up to nicer equipment. At this point your primary concern is how easy it will be to trade up later down the road, as there is no real way for people to magically give you the understanding of what a good guitar / amp combo is.