Hi Kam and Akmaral. Many thanks for both sets of advice. This sounds good as I would only be planning on short visits (three-four weeks at a time, and one-to-one sounds better than classroom for me. Akmaral - when I next plan to come to Astana I'll certainly 'buzz' you. Even if I only manage a couple of sessions each visit, it is a different voice to get to know. At the moment I am 'deep into' an engineering project, so have no immediate plans for a visit.