Your English is very good, Hanna! I can understand that it would be difficult reading these sources in a foreign language, however - and as Monica says, it is written in the colloquial style of many decades ago. No pictures in Lightoller's book, but you'll be very pleased when you get your edition of Stenson's biography - it's very richly illustrated with photographs.
There are a lot of innacuracies and deviations from his earlier testimony, Monica. For example, he has the
Titanic nearly colliding with the
St Paul rather than the
New York on departure from Southampton. He states that it was Phillips on
Collapsible B who gave him the information on what ships had been contacted and were on their way - when questioned specifically by Gracie in 1912 as to whether he had spoken to Phillips, he had said no (it was Bride who gave him the information). He also flatly contradicted his 1912 statement that he had seen none of the engineers make it up top - in TAOS, he describes their arrival.
Given the interval between the events and when he wrote them down, it's understandable that his memory on many points had become somewhat hazy! I don't think he would ever have imagined people examining and weighing every word on the subject the way we do today - had he anticipated that, he might have gone over his earlier testimony and researched some points more thoroughly.