1. House
House is one of the most popular genre's in EDM. House Music was born in the backyard of the midwest in chicago. Heavy use of 4/4 beats and drum machines. House, in the simplest terms, is dance music. It has a lot of disco and pop influences and the samples used in house music draw from any generation of music; from old school big band swing music, Madonna, Michael Jackson, Aretha Franklin, Paula Abdul, etc. I always recommend House to newcomers asking about EDM, it has a wide variety and is probably the best representation for EDM.
Recommended DJ's
Avicii
Daft Punk
Kaskade
David Guetta
Dimitri & Vegas
Examples of House
2. Dubstep
Dubstep is not one of my favorite sub genre's I actually do not like majority of the genre's music. It is however, an excellent genre for those new to EDM and there are admittedly quite a few musical gems in the genre. It incorporates a lot of other genre's into its style; break beats, and drum & bass styles. I joke about it being the "gateway genre" because a lot of my friends into the EDM scene started by listening to Dubstep.Recommended Dj's
Skrillex
Adventure Club
Flux Pavilion
Zeds Dead
BassNectar
Examples of Dubstep
3. Trap
Trap is my favorite form of EDM, it is not a genre for the faint of heart. The drum and bass kits are very heavy, and the vocals in the songs are often aggressive. . It originated as a form of southern hip hop that was extremely violent. As EDM Dj's moved into the genre it's focus shifted. It still incorporates many hip hop influences. If you like it loud and in your face this genre is definitely the one for you.
Recommended Dj's
RL Grime
Baauer
Hucci
Stooki
Mr Carmack
Examples of Trap
Examples of Trap