FIRST thing you should do is to carefully read the and specially the part about "What is ratio?".
Once you have read this, go on and read below.
SECOND thing is to NOT start to download torrents directly without thinking. There are different scenarios.
1. You register as new member with a ratio of 0.0 and have no VIP nor any uploaded credit.In this case you must be VERY careful.
ONLY download torrents that are Freeleech, or upload new torrents until you have a positive ratio. If you have a good or decent upload speed you should download enough popular Freeleech torrents for it to build up some positive ratio (upload). This might take a few days depending on what you downloaded, how popular the torrent is, and your download speed.
ONLY when you have a positive ratio should you download ANYTHING that is not Freeleech. And then you need to monitor your uploaded GB's so that you do not download more then you have positive ratio. Aka, if you have uploaded +5 GB's, make sure you don't download more then 5 GB's.
2. You donate to become MMAVIP and have an initial ratio boost given, typically 25 GB's and 2 months of VIP or more.In this case you can start downloading directly, but you need to make sure that you don't download more then the initial boost. If you have +25 GB's you should ideally not download more then 25 GB's material. The positive thing is that you can leave everything you download "seeding" and gain more extra upload GB's just seeding what you download.
In case you download more then your initial ratio boost and your ratio goes below 1.0 you need to be careful. As long as you are still MMAVIP you can still continue to download and use the tracker, but should your MMAVIP run out while you are in a negative share ratio (below 0.6-0.4 is the critical limit) your account risk getting disabled by the system for low ratio as normal member.
Even in this scenario it is a good idea to get Freeleech torrents, seed them, and continue to build your ratio using all available options.
3. You register as member or VIP and have a Seedbox.If you have a Seedbox you can often set filters to get new torrents as soon as they are uploaded, and this can usually create quite a nice ratio boost over time. Your torrents will be seeding 24/7 on high speed so this is usually a good way of maintaining a good ratio. Adding Freeleech torrents to a good seedbox also works great.
EXAMPLEScreenshot below: Earned +87 GB in 48 hours using a Freeleech torrent. (Screenshot made 21/1/2019)Remember that apart from seeding and donating etc you can also participate in competitions (and other features that might come along) and win GB's that way.