UK, Ireland / Advice for my Polish friend who came to the UK to work [22]

hello a polish friend of mine is hoping to come over here for work- he came for a visit last year. he is 27 and is a welder-he will becoming without friends or family my family and i and friends are to help him settle in here and he will be staying with us until he is established. he is coming here as work in poland for him is difficult to get so he has told us and he is uncertain of his future. he feels he will have better job prospects here. he is sad at leaving his family but he feels he has to . he does not speak good english and although he has made this decision he is apprehensive and needs lots of reassurance. i would like to know have anyone on this forum been in his situation and how did you manage what problems did you encounter or were things better than you feared and any advise i could give him?