Alright so here's a complete guide that will help you reach your goals (in the order you should train, I am assuming you want a greater combat level ): There are a whole lot of quests which you should do to OSRS gold help you train those abilities, but I'll skip them in this informative article. Strike to 30: Cows/Minotaurs at the Stronghold of Security.
For Prayer just bury the bones you get; in lower levels it'll allow you to get quite a few prayer levels. Ranged to 30: Cows/Minotaurs (... see the pattern ? Fundamentally those two are pretty great for low level f2p training). When you kill cattle, make sure you pick up their hides, it is very good money. It's usually empty and near a lender too. Runecrafting: This is not a battle ability, but I suggest training it first to supply you with the runes you'll need for Magic (if you don't would like to buy them of course).
Do what Bennub said; though at level 33 you'll be profiting from crafting atmosphere runes. Magic: You when you have sufficient money(~40k) buy a water staff, couple hundred ground runes and few hundred body runes. Now throw contested till level 11, subsequently weaken to level 19. As you can cast these while safe-spotting you won't require food. When you run out of runes or get bored you can always return to other skills, get money and return later. You might also cast combat spells if you would like to. Then comes Superheat. Since you'll need atleast 15 Smithing to make iron bars(or 30 for metal bars; both are very good, is dependent on personal taste ) I would say train your Smithing (and Mining while you're at it). Mining + Smithing: Again do exactly what Bennub said (he's really very useful, surprisingly xD) for Mining. After your 15(or 30), then you can start Superheating. You might also purchase bars and smith them.
LRC is extremely profitable, so I have heard. Folks come away with roughly 4-5k every undertaking, which is very good in the long term. In addition you have a shot in the Patriarchs, which automatically drop about 200k. Pretty dang good. They also supply very good experience, I believe. Do not worry about the minerals. It provides the time and, in my estimation, isn't worth the missing experience. Ugh. Hellhounds. I would block those. Only great for hint scrolls and charms. Gold charms, that is... They are cannonable, though. . I wouldn't block bloodvelds. They're great experience and very fast. No drops, however. Should you need a manual to cheap RuneScape gold any creature, check out this wonderful one produced by Azarath.