The advice about salvaging can actually work with very little investment:
How to salvage efficiently as part of a nullsec block:
You join a big nullsec block, get a destroyer or exploration frigate (they get a bonus for salvaging modules), fit it for salvaging and put 2-3 MTUs in it’s hold. Then go to their ratting systems. Nullsec blocks often have dedicated channels where the people in the big ships post the anomaly they currently clear. They do that to avoid warping into each other, which only costs time and may even result in unwanted bumping.
You join that channel, and sit on the undock of a citadel and bookmark the anomalies as soon as they get posted, either from within your probe window or from the sensor overlay directly in space. The advantage of that is that you can dscan the anomaly with a 5° angle and see when the ratting-ship leaves the site. (set dscan to 5°, hold down your dscan-button and double click at the anomaly in the probe scanner window to scan in it’s direction, the site has to be in range of your scanner.)
When the ratting ship leaves the site, it usually despawns shortly after - that is why you need to bookmark them beforehand. When a site has despawned you can still warp to your bookmark where the wrecks should still be around for you to salvage. Depending on how active the ratters are, you may have multiple despawned sites you could clear. In that case it’s a good idea to drop multiple MTUs at those locations. The MTUs will collect all the wrecks in one spot while you are working in a different salvage-field.
Usually the people in the big ships won’t mind if you go for the salvage as a new player. It’s still a good idea to ask in the ratting channel if you can salvage their wrecks.
Worth mentioning:
- Nullsec entities often offer a buyback program for salvage, so if don’t want or have a market you can sell the salvage to, you could sell it directly to your corp/alliance.
- A thing to keep in mind: Wrecks despawn after 1 hour. Usually that’s enough time to get them.
- Don’t forget to pick up your MTUs afterwards. You can scan them down again with combat probes, but it’s still a hussle you can avoid with clever bookmark management.
- If people are ratting in Titans - never warp to a site when you see one on dscan - they use a “BOSON” doomsday, which is an area of effect weapong that does not know friend or foe, it just deals massive damage to everything within it’s reach - including you if you would happen to land there.
- Here are some fittings and a “how to” salvage guide: [GUIDE] Low Budget Salvaging
P.S.: You may not get access to ratting-channels right from the start. After all, those channels make it pretty easy to awox people - awoxing descripes the act of killing people in your own alliance, corporation or coalition (people that are “blue” to you).
But if you know hot to dscan, you don’t really need these channels anyway and can find the ratters directly in space. 
P.P.S.: DaReaper has good point there: I would also not recommend to just go for the activity and grind that results in the most ISK - at least not if you don’t have fun doing so. At least I play a computer game to have fun while doing it, not to have “second job” - but that’s why salvaging in t1 ships can be so attractive. You spend maybe 10-20 million it and are ready to go. After a couple of sites you should have earned back your investment.