Base weight = gear weight (not including consumables, food, water, fuel).
Skin out weight = base weight + weight of clothes/gear carried.
My (personal) formula is total = (base + 1.5lbs food/fuel per day + 2lbs for water). My base weight is a little under 8lbs for 3-season (still working on my winter setup). So, for a 5 day trip, I'd estimate 8+2+(5x1.5) = 17.5lbs fully loaded. Personally, I think below 10lbs is a good starting-out target, you should start by creating a gear list, then replace your big four (pack, shelter, sleep system, cook system), then methodically eliminate other stuff you don't need. There's a bunch of example lists on the site... here's my current list, fwiw.
Based on your post, I'd say you should probably start by getting a lightweight pack - aim for less that 20 oz... again, tons of options here on the site. A great starter would be a golite jam or something around that size/weight.
Why don't you start by:
1) make a list of your gear (most important first step)
2) weigh everything and update your gear list (I use a kitchen scale)
3) post it here for comments & feedback (be prepared for a TON of feedback)