For youtubers, if you're able to RuneScape gold stand his voice, then protoxx has a manual for just about anything, Tonixrs is fairly great for guides also. TheRSguy is a solid youtuber, especially when it comes to high level content and Maikeru is ok too.For starting out tho, im sure that your familiar with how RuneScape functions in general, have fun getting first degrees and material, if its combat you want to train straight away I suggest visiting the troll gave north of burthorpe.
As someone who recently begun rs3 for a fracture from os I'd reccomend: Follow the optimal pursuit manual for a little. Do ed3 asap with charming potions until maximum combats and 99 summoning. Does not take that long. Use chins for range. From the time you finish ought to be close or in 85 dung for frost dragons and may even have the outfit ended (I'd do some extra range levels for gp prior to melees I think you may not get 85). Do herb to like 90 and you can also 7 boost for sacred overloads should you worldhop every moment. Now you can do anything you desire.
Ther isn't a checklist of type, but the majority of the ancient game is the same as OSRS as they haven't touched sub 50 in most abilities. I've a series called minimal maxing where I attempt to maximum in the least amount of match time (without bought MTX) I did encourage combat early and transferred over wealth to make a number of the early bubbles potential. But the questing route I took was really efficient as I did all the early levels with quests and rushed ancient curses. Maikeru is the communities greatest guide manufacturer by popular belief, personally I think Tonix has more informative guides in terms of information presented but his voice isnt as amusing and OSRS buy gold his videos arent as flashy as Maikeru's. The biggest gap between OSRS and RS3 is that your levels are less important, unlocking abilities/prayers/better equipment is a far bigger increase.