Bleh too many spells help please?

[BiGDeE]

ok, so im doing a shadow spec undead priest to level then going to holy but for right now how do i set my spells?? do i need to make macros or what??? is there a addon to give me spells by keys?? like the ingame 1 to = thing?? please let me know!! going insane haha

[.hack]

I advise getting an add-on called "Dominos."

Link: http://wow.curse.com/downloads/wow-addons/details/dominos.aspx

Dominos is an action bar addon intended to do the following:
Reuse as much standard blizzard action button code as possible.
Contain a relatively minimal feature set
Be easy to use
Be stable

It includes the following features:
10 action bars, pet, class, menu, and bag bars. Each one has customizable settings for padding, spacing, columns, scale, and opacity.
Customizable paging. You can switch pages on: action bar pages, modifier keys, forms, and targeting.
Customizable show states. You can tell your bar under which macro options to show.
Fading bars. You can set your bars to fade out to a certain opacity when not moused over.
The ability to customize showing empty buttons or not
Full button facade support
Keybound support
Sticky frames
The ability to move buttons in combat
A movable casting bar (optional)
A movable roll frame (optional)
A movable xp/reputation bar (optional)
Configurable right click targeting
Configurable self cast key settings
Possess bar support

...and will probably not end up with the following:
A stats bar
A minimap bar
True variable length bars

Here's how you use it:
To see the current list of slash commands, type /dom ? or /dominos ?
To open up the options menu, either go into interface options, or type /dom
To move bars around, either go into the options menu and press the "Enter Config Mode" button, or type /dom lock
To bind keys, enter binding mode via /kb or /keybound, or press the "Enter Binding Mode" button in the options menu.