Aptitude
AIIC Conversations II: Conference interpreting – What it takes
Interpreting Schools
AIIC Interpreting Schools & Programmes Directory
An Interview with Student Interpreters at Middlebury USA – ATA blog
How to Practise
A guide to practising – Guichot de Fortis
Self-training by the European Commission
Practise by not interpreting – Gillies
Using Audacity for dual track recording of interpreting practice
Where to Practise
Many of these groups are for interpreters rather than students, however, rules and personal situations vary so you may be able to participate.