I'll cover both hand tools and power tools. Tools can be rather expensive especially if you're trying to buy them all at once. I've worked out a deal with my wife that if I'm working around the farm and need a new tool I can get it, as long as I really need it. Levels of really need it vary, but the truth is a good tool collection should be put together slowly and if that's on a buy when needed basis so be it. But I do believe there are 3 tools that should be in every home owners tool box. How much you want to spend on those 3 tools can range from very affordable to very high end, but in the end that's up to you.
1. Cordless Drill/Driver
2. Circular Saw
My last two tools are both saws. I do believe if you are going to be doing any serious work there are a couple other saws (table saw and compound miter/chop saw) you should invest in, but the next two saws are ones you should definitely have. First up is the circular saw. A lot of times you'll hear this saw referred to as a Skilsaw, which I'm sure the Skil's parent company Bosch loves. But in the end the Skilsaw is a circular saw, but not all, oh you get the idea. There are two types of circular saws and it all has to do with motor placement. The sidewinder style has the motor on the side of the tool and produces more RPMs (revolutions per minute)
The other type is the Worm Drive and has the motor placed on the back end of the tool and produces more torque.
Some people like one style over the other, but in terms of price the sidewinders are much cheaper. You can also find cordless circular saws and this might be something to consider when looking at a cordless drill, but I feel you really should have a corded model to do some serious ripping and cutting. What model you choose is up to you. Price range from about $30 to the hundred of dollars. Oddly enough I have a fairly cheap Skilsaw in my toolbox that I've had for almost 20 years and I'm pretty happy with it.
And finally we get to the Jigsaw. The circular saw is great for big quick cuts, but the jigsaw is great for everything the circular saw is not. It's great for cleaning up corners when making right angle cuts, cutting larger awkward openings, and cutting weird angles. You get the idea. And again like all tools prices range from very affordable to master craftsman deluxe edition with cup holder. And many tool manufactures also make cordless versions. I have a fairly affordable Black and Decker jigsaw. It's super basic and there were many times I've been tempted to upgrade to a nicer model, but it's been a great workhorse and for what I tend to use it for it works great.
Well there you go. My thoughts on the 3 power tools every homeowner should have, heck even if you don't own a home they are 3 great tools to have and shouldn't break the bank. I've provided images of the different types of tools to illustrate my points and I'm not endorsing any one brand. People can be fiercely loyal to a tool brand and that's fine with me, use whatever brand you like.