For lights I suggest either the cheapest led 4ft that Daisy chain together or running multiple screw in bulb outlets and high output photographer cfl bulbs or both. Volume of light makes up for color temperature and the 20packs of 4 ft led sticks are like half the retail store prices. You also should paint everything white or as close to white as you can. Paint is a big deal that it's there but you can go cheap here too with primer from Walmart.
Next I suggest milk crates, filing cabinets, and pegboard and a small but heavy non moving bench to mount a vise to ( I use the stump of a 100 year old black oak which is also needed for old school hammerforming body panels or knights of the round table armor)
The milk crates are free stackable and can hold lots of weight. You will find a lot of other food boxes fit in them perfectly like premade broth or boxed milk. This is perfect for mid to small organization. But do put the crates on wall mounted (not floor mounted, floor space in precious) shelves.
Filing cabinets come in all shapes and sizes and usually can be found for $20 or free. If you pay for them used only get the old school ones with metal drawer rollers. Check file cabinets are good for tools but map makers drawers are worth paying real money for if you find them/ better. The two drawer cabinets are the perfect height for mounting horizontal bandsaws, or grinders,lathes, or whatever bench top tools that don't get leveraged on. You can add curbside partical board are a reinforcement for the tops attached but drywall screws. Once you stick castors under them they become the perfect work height, roll around storage things.
Filing cabinets need castors under them, hft movers dollies are generally a good cheap source for castors.
Everyone likes to hate on pegboard but if you don't abuse it, it's perfect for keeping low weight stuff out of the way. The alternative in sticking the stuff in some box on the floor that just makes your life harder.
Other advise, skip the enclosed storage cabinets they just hide mice and clutter. They look good in magazines but they are stupid in a real working garage.
Last scavenge Craigslist for heavy duty used tools, if you can't find that then find stuff from Taiwan and usa made home use. If you are in a bind and need the tool now go to hft, don't buy the warranty, but don't buy it if you aren't using the thing immediately to make sure its quality. Otherwise take it back in 30days with receipt. ( I love hft they have supplied most of my garage but you do get some lemons.
If I didn't say LARGE OLD USA made vise then let me say that twice now