It depends entirely on what budget you have to play with.
The big names in cameras - Canon, Nikon etc all produce affordable starter DSLR kits if you're looking at getting your first one, the best thing to do is experiment with a few from different makers and find which one is the most intuitive and easy to use. Live view is a great tool so make sure what you're looking at has that as a feature as it makes shooting a hell of a lot easier, and I think it's pretty much standard on all DSLRs now. If you're on a budget you'll most likely be looking at a crop sensor and not a full frame as they are a lot more expensive and if you're a more casual/hobbyist photographer who just likes to go out and play with a camera at weekends there's no point in owning one. As others have said invest in a good heavy tripod if you're getting a DSLR as the cheap aluminium ones struggle to support the weight and you don't want it to collapse. Manfrotto is the go-to for high quality tripods and once you start using them you will never go to another brand.
I had a Canon 550D for years and it was the most robust, reliable, hard working piece of technology I've ever owned. It never missed a beat and never once let me down despite all the abuse it took, and it was only within the last couple of years I finally upgraded to a new 80D as it needed to be retired. I've used a Sigma 10-20mm f3.5 wide angle for almost a decade now and those lenses are now ridiculously cheap as they are old technology, but still very usable and an exploring mainstay. I believe you can pick up a 550D for about £150 now as well.
From a personal perspective I could never use Nikon, as in the decade I've been using Canon equipment numerous friends who've been using expensive Nikon gear have had it break down, go wrong, or stop working and my Canon stuff has continued perfectly fine. Don't take my personal experiences as gospel though it's all about working out which is best for yourself.
