Easiest song to learn I think.

Frijid Pink version
http://www.ultimate-guitar.com/tabs/f/frijid_pink/house_of_the_rising_sun_tab.htm
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Guitar noise lesson on House of the Rising Sun by The Animals
http://www.guitarnoise.com/lesson/house-of-the-rising-sun/

The Frijid Pink version is intermediate due to the lead breaks, and the intro.

The Animals version is pretty straight forward. For timing listen to the original version. Then figure out what 6/8 timing really means; each 8th note gets a beat. So that means 6 beets per measure and each one is an 8th note. To see this watch the original version and count each time the lead guitar hits a note.

Below is an explanation of The Animals version.

The guitar part is a Arpeggio. The wiki describes a Bach arpeggio to be in 6/8 timing with 6 8th notes in a measure. Which is exactly the way The Animals have the lead guitar on this song.

You can think of this count as 1,2,3,4,5,6 and then 6,5,4,3,2,1 repeat.

These are the first 4 bars of the song as tabbed by an Unregistered user at www.ultimate-guitar.com

As you can see there is an extra note in this tabulation, and it is in 7/8 timing. Which is incorrect.
INTRO
Am C
E---------------0------------------------------------0-----------
B-----------1--------1-------------------------1--------1--------
G--------2----------------2--------------0-----------------0-----
D-----2-------------------------------2--------------------------
A--0------------------------------3------------------------------
E----------------------------------------------------------------

E------------2---2--------------------------------1---1----------
B---------3----------3-----------------------1------------1------
G-----2------------------2---------------2--------------------2--
D--0---------------------------------3---------------------------
A----------------------------------------------------------------
E----------------------------------------------------------------
http://www.ultimate-guitar.com/tabs/a/animals/house_of_the_rising_sun_tab.htm

This version can be found in the link to Guitar Noise, and is the most correct. Written By: David Hodge.
http://www.guitarnoise.com/lesson/house-of-the-rising-sun/
Am C
E---------------0------------------------------------0-----------
B--------------------1----------------------------------1--------
G--------2----------------2--------------0-----------------0-----
D-----2-------------------------------2--------------------------
A--0------------------------------3------------------------------
E----------------------------------------------------------------

E----------------0------------------------------------0----------
B--------0-----------1-----------------------0------------1------
G-----2------------------2---------------2--------------------2--
D--3---------------------------------3---------------------------
A----------------------------------------------------------------
E----------------------------------------------------------------

http://www.ultimate-guitar.com/tabs/a/animals/house_of_the_rising_sun_tab.htm

The Animals Live.
http://www.videosift.com/video/The-Animals-House-of-the-Rising-Sun
http://videosift.com/video/The-Animals-House-of-the-Rising-Sun-LIVE-1964#054537487116901984733