Glad to hear you are hopping into this... it'll be good experience and you will be able to say you did it afterwards. due to my anal retentiveness..I'm going to call the part you need to remove the accessory bracket.
Tensioner is a smaller piece that I will refer to as a specific area.
Ok.. Tension on the belt is provided by the pulley under and slightly front of the alternator. Using the 15mm as mentioned and a counter clockwise motion slip the belt off. (Later use manual in glove box page around 6-67 for routing)
Disconnect the negative battery cable from the battery. 5/16" or 8mm
Remove alternator, disconnect eletrical on back (one nut) then underneath at the back by valve cover a connector. Remove 3 13mm bolts from the front. One on either side and one under and left of the belt tensioner pulley.
Remove power steering pump by fitting a 13mm deep socket through the holes in the power steering pump pulley. There are two bolts.. at 12 and 6 oclock. (it'* actually easier than it seems. If you want to see them, jack up car and remove passenger tire and plastic wheel well splash shield. Gently lower pump down. It will rest close by if not on the oil pressure sender. (you don't want to break the sender).
Now you should have 3 or so bolts that hold the accessory bracket on. Find them all and it will free up.
I suggest aligning the bracket and starting a bolt or two with a helper.
Tightening. Tighten all bolts to snug plus a little. When I say a little... keep in mind the accessory bracket bolts to the head and block. You can't really hurt them...but vein popping tight isn't needed. Go snug then give it a little tug. No need to make it impossible the next time around. The alternator...well..that bolts into the aluminum accessory bracket..also..a little past snug, remembering you are working with easy to strip aluminum.