When you are starting out, Harbor Freight, Garage sales, and want ads are your go-to places.
Tools I would recommend is a full face shield, the angle grinder, a ball peen hammer and a 2.5 lb hammer, a big vise, a small drill press, and a sanding station. Maybe some different hand files for smoothing your work. A small welder would be good. I've bought two stick welders at garage sales for $40.00 and $10.00.
The full face shield is a must if you use an angle grinder. I've had a kick back once using a cutoff wheel. Put a 3 inch scratch in the shield.
Other than the welder, you could still buy all the tools listed for around $300.00. Get some use out of the tools you start with and upgrade as your skills and funds expand.