If you are encouraged to build a team and you can earn money from that team selling then it is most definitely an MLM. The difference between that and a pyramid scheme isn't much - there is a product being sold in an MLM whereas there normally isn't for a pyramid scheme, they're also illegal in this country.
That said, an MLM is a barely legal pyramid scheme. Most of them offer a poor quality but over-priced product such as Younique or Juice Plus. The products have to be expensive so they can make sure that everyone entitled to a piece of each sale can get there's while still making money on the product and they tend to be poor quality for the same reason - they need to ensure they're produced as cheaply as possible. A friend, Elle Beau, and her readers worked out that Younique's 3D Mascara can't cost more than £3-4 to produce in order for everyone to get their slice of commission - they sell it at £29.
Anyhoo, being an ex-rep there aren't many tips I can give you because it's so hard to build and keep a team, nevermind make a profit while ensuring they make one too. Just keep your morals, don't spam, don't lie and don't fake it until you make it. Whoever you joined under
should be giving you guidance throughout this whole thing (you didn't say who you were with).
If you have the time, just take a few minutes to check out this post of mine and Elle Beau's story.
My MLM Makeover: Transforming Me Into A Stranger
Elle Beau - The Anti Blogger
A final piece of advice, whatever you do KEEP RECORDS! Make sure you write down everything you spend money on (that isn't personal use) and every penny you make (for tax reasons obviously). Every website domain or business marketing tool they encourage you to buy, stock you order in, samples you prepare. There are some teams who are discouraging their members from keeping these records and stating "You need to make a loss before you can make a profit".