I've discovered that the user interface is attrocious and difficult to understand for new players though, importantly that you will find sone guides on the market just for the interface. Nonetheless, it's customizable to yet you want to play and I really like it, using multiple loadouts for different tasks or play screens! If it annoys you, then just be aware that anything annoys you has a repair. The UI is as complex as you want it to be. You could begin trying to obtain every setting. I'd suggest leave it as is when you start. 2 actions pubs are wanted by you, add one. You do not want to have the combat ability page hide it.
The principal differences in my opinion. OSRS has more afk battle: (generally ) it's more click and wait till your opponent is dead. RS3 on the otherhand has abilities you need to click to defeat your opponent. OSRS has bigger community. But RS3 has in my opinion pvm articles that is endgame. OSRS has outdated images. RS3 appears newer. RS3 has QoL attributes than OSRS. OSRS is against QoL since they don't want easyscape. As grinding too much is not enjoyable in comparison to 10 years back, but I have easyscape.
If you do not want pay2win and to grind out your eyes, OSRS is your way to go. The only thing you can buy with cash is bonds which you market for in game gold or can use for membership. There is nothing else. RS3 provides challenges / weekly to get a twist and xp the wheel type trades. They have a marketing for it every now and then you can spend real money to buy xp/ purchase gold/ things. Someone really did it and while it price 13k USD to maximum, it's possible and in RuneScape game. There's also auras which require you to pay a month to gain things to buy them and a bunch of cosmetics in RuneScape game.
The UI can be a wreck, I played back in the afternoon but Idk what is going on now. I have played RuneScape since 08 and been enjoying OSRS off and on since release. In my opinion OSRS is your exceptional. For PvM, Definitely PvP, and skilling. Additionally, it had a community that is much larger. There is also a solo developer making a"OS Remastered" client currently which is working on upgrading graphics heavily. Look it up and combine the discord, it's pretty great!
Check out www.rsgoldfast.com for more details.