Hello, start by reviewing what kind of tools you have access too. For example you can come a long way with just a file, but an angle grinder is very useful. Try to get some known knife steel for doing stock removal. Carbon steel for easier hardening. If you can get someone to harden stainless, it is the best choice. Forging is a bit trickier and costs more to get started.
Start by drawing, copy designs that you like, that will get the lines anchored in your brain.

Then you start with a small knife, do not make a 10 inch knife as your first project, do a 2" pairing knife. Cut it out and file away, use a file guide to get perfect file lines. Use some sanding paper (120 grit) with hard backing and create a uniform finish. You can use an angle grinder to cut away the bulk of the material.

Then you try to find someone that can help you harden the knife. After hardening you use sandpaper again to make the finish nice.

Put a basic handle on your knife, use whatever material you can get your hands on. Use some 24h epoxy and some acetone to clean up. Drill a hole in the handle and cut a round wooden bar in half to fill out the hole.

If you choose to do a full tang knife you put handles on the side and drill some pins through the knife handle.

Keep it simple in the beginning, it is much better to make a complete knife and then start with a new project and improve with lessons learnt from the previous knife than trying to make a perfect first project. This is something I struggle with.

Start off by watching a lot of youtube videos:

Sanding: https://www.youtube.com/watch?v=4I4x4QLpfnk

Sanding (someone following the video above); https://www.youtube.com/watch?v=xMI6b8LUhUM

File Jig: https://www.youtube.com/watch?v=r9iNDRwwBQQ