Newbie and Tulips question

Newbie and Tulips question

I am new :) I am new at gardening too! My question is for tulips: How deep do you have to plant the bulbs? How far apart? Is it okay to have mulch by them? Can I order them online? Would you recommend a garden center first? Keep in mind I live in a cold weather state so there will be snow. Thank you I am very new at this--I have been an apartment dweller for awhile. I am just getting my bearings back after having a baby and now I am getting energy to try gardening. Thank you :)
Presents

Presents

I found this little girl. . .

I found this little girl. . .

My room!!!

My room!!!

Re-potting a Cymbidium

Re-potting a Cymbidium

plant id

plant id

Care of lemon myrtle

Care of lemon myrtle