Here are the 5 positions of the Dominant 7th Arpeggios. Note that Dominant arpeggios (like chords) are often just written as 7 - so if you see a G7 arpeggio then it means that it is a G Dominant 7th arpeggio!

Make sure you practice playing the related chord, then the arpeggio and then the chord again - you should try and build a relationship between the two things (the chord and the arpeggio).

Fingering

The fingerings are suggestions - I suggest that you break them only if you have a logical reason to. Don't barré with your fingers - use the tips!

Arpeggio Formula

R ^ 3 ^ 5 ^ b7
(of The Major Scale)

This means that you will use the first, third, fifth and flat seventh degrees of The Major Scale.

Tips for learning arpeggios quickly, easily and perfectly

• DO IT SLOWLY AND GET IT RIGHT
Don't make any mistakes. Play it 4 times perfectly at a very slow speed and you will find you can speed it up without making mistakes and developing bad habits you will have to correct later.

• USE YOUR FINGER TIPS
Do not let your fingers "fold", use the tips the whole time, and definitely NO barrés at any point. Ever.

• ALWAYS START AND END ON THE LOWEST ROOT NOTE
This will help train your ears into hearing the sound of the major scale, very important. So start on the lowest (pitched) root note, play up as far as you can, then go back down as low as you can, and then back up to the root note.

• LEARN THE POSITIONS (SHAPES) ONE AT A TIME
It is very important that you get all five of these positions down... eventually, but please start with one at a time - much much better to be able to use one scale shape and play a solo than play five up and down and not be able to do anything with them :)

So what is all this CAGED stuff?

The CAGED system applies to arpeggios as well as scales and chords!

Get all the information you need about CAGED at TB-031 • The Caged System

Root Notes???

A root note gives the scale it's name. Look at any of the scales and arpeggios (and most chords) on this site and you will see an R on some notes. This is note that gives the scale it's note name.

For example
Look at Position 1 below and notice that the R is on the 6th string (played with the second finger). Whatever note you put that one becomes the name of the scale. So place your second finger at the 3rd fret and you will play the G Dominant 7 arpeggio (because the note on the 3rd fret of the 6th string is the note G). Place the second finger on the 9th fret and you will play the C# Dominant 7th arpeggio (because the note at the 9th fret of the 6th string is the note C#)

The Arpeggio Shapes

Pattern 1 - E shape

Pretty straight forward this one, bit of stretch on the 1st string, but nothing too hard... Probably the first one that you should check out.

Alternatives
None that I know of. This is it.

Pattern 2 - D shape

This can be a little tricky to play, especially the 2rd string notes, but you will get used to it and it fits the chord shape well.

Alternatives
The most common alternative is to start with your 2nd finger (on the 4th string) but it leads you to playing almost in the E Shape, so I think this is the best option.

You could always experiment yourself and see what you find ;)

Pattern 3 - C shape

Pretty easy position and is used a lot in blues, so get this one down!

Alternatives
None that I know of. This is it.

Pattern 4 - A shape

Make sure that you get the roll with the 3rd finger, may take a little practice, but is not too hard.

Alternatives
None that I know of.

Pattern 5 - G shape

Pretty good one, nothing to note really...

Alternatives
Think this is it...