I slightly wrecked my bike - looking for parts - how do I start?
Before you start, check very closely at the top and down tubes, about 1-2 inches behind the head tube welds.

Your frame may be damaged in these spots, which is totally counter-intuitive.  A steel bike will develop two rust rings here after a front-end collision.

Use a magnifying glass or a jewellers loupe, and a bright light to look for any cracks or distortions.  A metal ruler can be used as a straight-edge to look for sharper bends.

Spending money on forks may be wasted if the frame is damaged.

That said - I rode a steel bike that had frontal damage for several months.  You need to make a judgement call once your inspection is done.

Can't build a house on a poor foundation; can't build a bike on a damaged frame.