It's hard to OSRS gold imagine how you could have figured out that, if this was the case, my frnd wudn't have been able to get that kind of money. Did you think that your friend lied? LOOL and so true. Perhaps this friend mentioned what level of combat she was when she earned all this money? This is a typical response to each of the three.
I've seen most of them Agility- Do the Barbarian course until you reach level 52. Then go to an outdoor course. Food should be three food items that boost agility levels, including tuna. You should only bring a spottier/spotted cape. Another option is fishing for salmon, flying trout and sturgeon.
Thieving- I believe that the guild of thieve's is what's beneficial however, I don't own 70 thieving members, so I'm unsure. Slayer- Do Smoking Kills quest if you've not done so already. Choose your best or second-highest level Slayer master you can and always go for the best every five times to earn more slayer points.
Farming- Do the farming run approximately every hour However, you should try to get at least one per daily, regardless of whether you only manage to get in for 15 minutes. Herbs can be good for money, others are for exp but not essential if would like to be more thrifty.
Woodcutting- Try to use a dragon axe as soon as you can. Cut teaks near the Tai Bwo Bwanna hardtree grove and then burn them. You can change to mahogony at any time you wish. It is faster to exp at level 68, as the highest level of exp for an hour within the "hardgrove" when using levels 99 wc and buy osrs fire cape dragon's axe of 40k WC exp, as well as 60k fm exp. in the same situation, ivies could reach 100k.