I hate adjusting gears, I know the principle and how to do it, but all the factors combined end up in a headache.
Went into my LBS to see if they could do it for me before the weekend, but they were too busy, I bought some tyre levers, and have to give them massive credit, the guy said he was unlikely to be able to, but took the time to show me how to check the cables for wear, and how to adjust it. Said if I was unable to sort it to bring it Saturday morning and he would try but couldn't promise anything. Really helped having someone show you and able to ask them questions rather than just reading online or watching a youtube video.
Not touched the gears since I bought my bike, was a little slow shifting into lower gears and sometimes wouldn't go into them so just a small adjustment required.
Ended up going the wrong way with the adjustment so had to start from scratch.
Shifted into the highest (smallest) gear, wound the adjustment on the rear dérailleur in then shifted down one gear, whilst pedalling wound the adjustment on the dérailleur out until it shifted and sounded like it was spinning OK.
Then repeated this step for the next gear, which didn't require any adjustment, a couple of the middle rings seemed difficult to have running cleanly.
After going up and down the gears a few times some seemed to need readjusting slightly. Have done it as best I can and will test ride it tomorrow, fingers crossed!