If getting to a public course or arranging bespoke training are not viable options for you, you might consider exploring the on-line courses that ELT well now runs. There are courses on identifying SpLDs in EAL / ESOL learners, as well as how to support these learners in their language development.
Other courses that Anne Margaret has contributed to include the ELTon award-winning dysTEFL course, which has recently been updated and is available from www.dysTEFL.eu
Lancaster University and FutureLearn have also teamed up to produce a free MOOC (massive open on-line course) ‘Dyslexia and language teaching‘ which will be running again in April 2018. You can sign up and take part here: www.futurelearn.com/courses/dyslexia