I was hoping I could source some parts on here.
The one on it is in good condition, just I find the seats really uncomfortable.
Someone said I might be disappointed in the padded saddles so I might just leave it be.
I won't be going on long rides.
Thing is, saddles are a very personal thing, and dependent on the shape of your body and the width of your sit bones. What's comfy for one person isn't necessarily comfy for someone else, and yes, padding is lousy, because you sink into it and then the stuff pinches you in places where you don't want to get pinched.
But before you start spending money on a new saddle, make sure the one currently on the bike is at the correct height and distance from the bars - because a badly-positioned saddle can cause you a whole world of discomfort. A lot are set too low. It's a tweak that takes you just a few minutes and costs you nothing to try.
For height, you want your leg fully extended while sat on the bike, with your heel on one of the pedals while it's at the bottom of its stroke. Using a chair back or wall to help support you works well. You may need to tweak a bit, but that will give you a good ballpark.
For distance to bars, you want the tip of your elbow to be against the saddle nose, with your middle finger on what is effectively the top of the forks (steerer). Again, that's a ballpark and may want some tweakage.
The last thing you might want to check is the saddle tilt. Ideally you want the saddle to be level, but some people prefer a little nose down. For instance, for me, it depends which bike I'm riding. On my road bike, I like my saddle to be nose down, but on my hybrid and mountain bikes, I like the saddle to be level.
I should add, I have the same saddle on all four bikes because it suits me.
I wouldn't buy a whole tool kit as has been suggested tbh. If you've a set of allen keys, a flat and phillips head screwdriver and spanners in the more common sizes, you should be able to do most of the jobs in hand. The exception is the chain splitter, and, if needed (it may not be) a crank extractor. But just buy the tool you need when you need it if you are intending on sticking to a tight budget. That said, good tools are never wasted.
For cost-effective tools and parts, if there's a
Decathlon near you, they're definitely worth a visit. They're competitive in terms of pricing, and their own brand stuff pretty decent. You'll probably need to factor in a new chain, new brake blocks and new inner cables at the minimum if the bike's been neglected for a long time. And yes, twist shifters are non-serviceable, so if you do need new gear cables, you will need to buy the whole units.
But start with the simple things. A good thorough clean of the bike will tell you if there's anything major that needs doing. A wire brush, a can of WD40 or GT85 and a supply of rags are your friends here. And an old shoelace is great for getting the muck out of the rear gears.
FYI, my two mountain bikes were rescues from the sales area at the local tip. They both looked OK visually, but one needed a complete strip down and rebuild, and I ended up chucking about £400-worth of parts at it. The other just needed a clean and service.