In these lectures the student will be given an overview of reaction processes such as elastic, inelastic and fusion at the energies relevant for the post-accelerated ISOLDE beams as well as direct reactions. The different information that can be obtained by studying such processes concerning both nuclear structure and nuclear reaction will be highlighted. The minimum theoretical background to understand and calculate some of these processes will be given. Practical exercises including optical model and DWBA calculations using FRESCO are foreseen as well as the use of TWOFNR code for transfer (d,p) reactions. The course will be made up of 4 lectures in the morning from Tuesday 22nd to Friday 25th April and practical exercises in the afternoon for which the participants will require their own laptop.