Alright so if you want to farm gold in silverwastes, the first thing you need is a good group. Might be hard with that during the week (At least before evening), but during weekends there are some groups almost all the time (and especially after noon). Go to lfg and choose "central tyrian squads". If it says something like "SW". "RIBA" "Silverwastes" or stuff like that and it has a commander and at least 20 people then you're good to join.

Now it can be kind of tricky because you might join at various phases of the whole sw meta, but I might as well start with how it normally goes.
So the first phase is taking 4 forts on the map (Red, Indigo, Blue and Amber) and make sure  you're taking them in such order. (Hence the name RIBA) After they're taken, you should see on the map that they're attacked and if you guys took them in the right order then you should head to the Red fort first and just kill the mobs there for a minute or two and then move into Indigo fort, kill couple of mobs there and move to the Blue Fort, kill couple of mobs there and move to the Amber fort. That's basically it for this phase. it lasts about 40 minutes so it might get boring quick.

After the progress bar (Called pact preparation on the screen or something like that) is full then The Breach happens. Basically at each base spawns a champion (5 of them in total, cause there are two at Indigo) and you have to kill those asap. Just focus on the one you're closest to because people usually are spread out enough to kill all of them in time.

Then there are 3 minutes of break and you have the Vinewrath (VW for short), you guys go to the west of the map and spread into 3 lanes, just pick one lane and kill everything that threatens the siege carrier in that lane. When it's your lane's turn, you guys go inside the VW and kill a champion, each lane fights separately so you can't go the first lane, fight the champion and then go to the middle lane and fight their champion.
Either way if each lane killed their champion (Bottom one fights first, then the middle and the top at the end) you can go inside again (You get kicked out after the fight) and claim the loot.

That would be it BUT for doing events you get the currency called Bandit Crests and what you want to do is use those to buy as much Bandit Skeleton Keys as you can (Npc at the base) and what some commanders do after VW is called Chest Farm. You follow the commander and use the keys to open Lost Bandit Chests which have a guaranteed champion bag inside.
CF usually lasts about 15 minutes or so and you can get like 40 champion bags or more during those 15 minutes.

Then RIBA starts again and so on...

Some notes:
First phase might seem like it's not yielding much profit, but the bags you get as a reward for defending the forts (Or caravans, make sure to help a caravan if you see that one is being attacked) actually give more profit than the regular champion bags because you get 3 items out of them instead of 1 so they're basically worth 3 times more than regular champion bags.
Also don't bother salvaging Lumps of Ambrite that you'll find, just sell them right away.
Don't open any bags on a level 80 character and just wait until you have one that's lvl ~50 (Mine is lvl 53) because then the profit dies massively. The only bags to open on a lvl 80 character are the bags of rare gear.