The Oxford 3/4 places are a natural stepping stone into ringing surprise minor methods, whilst the Kent places are difficult to ring properly and aren't used in other methods. The dramatic change in direction in Oxford as a result of the 3/4 places, if missed, can cause mayhem.
Oxford and Kent are very closely related. Each bell rings the slow work and treble bobs except when the treble dodges in 1/2. At this point instead of making wrong places in 3/4, right places are made. Importantly, this means that second place bell makes fourths and in, whilst fourth place bell makes thirds and out. A dramatic change in direction which can be difficult to correct if missed - there is no "fluffing" of the Kent places and carrying on.
Introduces the third place when the treble dodges in 1/2. This place is common to all right-placed Surprise methods.
When you are learning Oxford it is perfectly alright for the strongest ringer or the treble ringer to call out "treble dodging in 1/2 now", "lead end" or "hunt above" (the slow bell) or "dodge above" (the slow bell). Adding structural comments like this can stabilise the ringing and help people learn how to ring by the watching or listening for the treble.
The plain hunt block (x16) at the Oxford lead end is replaced by a (x14) block when a bob is called. This is the place notation block as for a bobbed lead of Plain Bob Minor. It has the same effect:
Sandal Treble Bob Minor is a half lead variation of Oxford Treble Bob Minor. A (x56) block replaces the (x12) at the half lead which disrupts the slow work and causes a triple dodge in 3/4 around the half-lead.
Oxford is a sixth place method, the lead end comprising a (x16) or plain hunt block. This contrasts with Plain Bob which has a (x12) block at the lead end. To call a bell unaffected, you don't call Wrong or Home, but In and Out (of the slow work).
If you call a bob at the end of the first three leads then the tenors ring the same lead (the first lead) three times whilst the other bells practise making the bob, running in and running out. This touch is only three leads long.
Calling any bell (but it is traditionally the tenor) to run in and then run out, two times, will give you a two course touch of 240 changes.
Call "In, Out, In" three times. This is analogous to the "Wrong, Home Wrong" three times called for a seconds place method.