That depends what you mean by multifamily. Duplexes, tris, and quads are all valued comps, just like single family. Because of the way they are valued, there isn't that much difference in the business plan for profitably acquiring and running these. If you buy a SF rental, you pretty much have the idea. With more than one unit, the biggest difference is that you have tenants complaining about each other and the property picks up more of the maintenance, like lawn mowing.
There is a huge difference when you get to 5+ units as those are valued using the income method. The business plan to profitability is very different.
If you are just starting out, I'd recommend starting in single family. If, for whatever reason, you don't want to go that route and don't have enough to buy a 5 or 10 unit building, then syndication is one route.
I would caution you to pick your sponsor very wisely. Many charge fees all over the place. One of my most detested is the acquisition fee. This is when syndicators justify getting paid at closing for having done nothing but acquire a property. But, there are many other fees that you could be charged so read the legal docs in full. Other syndiicators are not good operators. When the tide was coming in, it floated all the boats, but some of them are now struggling in this economic cycle. I would also NEVER invest with someone who is just a money-raiser. (There are many out there.) If the person you are talking to is not the person who is going to be overseeing operations, find out who is or don't invest.