Pass #1: Translate as many words as you can on your own. Here are worksheets you can use:
Pass #2: Use your reader's edition to fill in the words that are used 30 times, or less, in the NT.
At this point, see if you can manage any sort of translation of these verses, even if it is only fragmentary.
What If I Don't Have a Reader's Edition GNT?
Click to see purchase options...OR you can download a reader's-style list of rare NT words for each verse here:
Pass #3: Go to StepBible and fill in all the remaining words.
Acts 2
40 ἑτέροις τε λόγοις πλείοσιν διεμαρτύρατο, καὶ παρεκάλει αὐτοὺς λέγων· Σώθητε ἀπὸ τῆς γενεᾶς τῆς σκολιᾶς ταύτης.
41 οἱ μὲν οὖν ἀποδεξάμενοι τὸν λόγον αὐτοῦ ἐβαπτίσθησαν, καὶ προσετέθησαν ἐν τῇ ἡμέρᾳ ἐκείνῃ ψυχαὶ ὡσεὶ τρισχίλιαι.
42 ἦσαν δὲ προσκαρτεροῦντες τῇ διδαχῇ τῶν ἀποστόλων καὶ τῇ κοινωνίᾳ, τῇ κλάσει τοῦ ἄρτου καὶ ταῖς προσευχαῖς.
43 Ἐγίνετο δὲ πάσῃ ψυχῇ φόβος, πολλά τε τέρατα καὶ σημεῖα διὰ τῶν ἀποστόλων ἐγίνετο.
44 πάντες δὲ οἱ πιστεύοντες ἦσαν ἐπὶ τὸ αὐτὸ καὶ εἶχον ἅπαντα κοινά,
If you are not doing any handwriting, you can print out these worksheets and do your handwriting on them.
...to learn whatever you can from them.