they are scatterd all over skyrim but you could buy them from Phines Gestor he is in the collage of witerhold located north of winterhold
Of course there is.
First, make sure you have one of the summon spell selected and have enough mana/energy/whatever to cast it. Then aim fairly close to your feet - most of the conjuration spells don't have a very long range.
summon the basic, weak skeleton. get a novice turn undead spell, which you would of probably started out with(talking about both spells) keep casting the turn undead spell on the skeleton. Your conjuration will raise FAST.
Yes, they can. But usually they only do this if you have interacted with them(cursing, spells, conjuration, attempted exorcism, etc.) Otherwise, they usually inhabit an establishment or object.
You cannot construct your own spells as you could in oblivion, you must find or purchase spell tomes and consume them.
Yes, you can perform all five assuming you get a high enough skill level for each school.
There's a student who walks around in the collage of Winterhold. He specializes in illusion spells, and can train you, and sell you illusion spells.
Destruction Spells.
You have to be level 90 in Conjuration and complete the Conjuration Ritual Spell for the College of Winterhold. The spell lets you bring a person back to life permanently. The Spell is called Dead Thrall.
There is no option to make custom spells like Morrowind or Oblivion. You have to stick with the ones taught to you by the spellbooks you buy.
Yes, there are no classes. Any character can learn spells and start developing magic skills.
a conjurer was caught for doing a fraud of 10 lakh rupees