I have just bought my first bike since being a teen.
Just a cheap Boss blade hard tail from a catalog as im skint
Im also looking to buy panniers and other bags to take some kit off my back and start bikepacking.
Really looking forward to being able to go long distances again and getting fitter too.
Just be careful mate, that's a pretty poor quality bike, it's a steel frame made from unbranded tubing with a pretty terrible front fork.
Should be fine for easy tow path type riding or the road, but if you start loading it up or giving it a trouncing off-road things are going to start failing.
Sorry to be a downer, but i've personally witnessed bikes like these fail on more than 1 occasion.
It's tough to find a MTB that's up to regular off-road use for under £300 new.
That's not snobbery, it's just that the frame, wheels and components cost money to make.
On a tight budget your best bet is to buy a older used bike, bike geometry, wheel sizes, brake types etc have change a fair bit in the last 5 years, but a decent 5+ year old bike will still stand a fair bit of abuse and you'll be able to ride it as far or hard as you want.
Again really sorry to be a downer, i was in 2 minds to say something.
If i hadn't had mates with similar bikes fail on them i would have kept my mouth shut, but the last one failed at the frame, right near the headtube, which could have been very nasty so i figured it's better you know so you can keep an eye out.