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:
Acts 3:22 (There are no 'rare words' in this verse.)
Pass #3: Go to StepBible and fill in all the remaining words.
Please do not give up on listening to, and speaking, Greek. These activities engage regions of the brain that are very much involved with language acquisition. Listening/speaking will help you learn to read better.
First, read these verses on your own, out loud.
Second, listen to John Schwandt read the verses at full speed.
If you find this difficult, then listen to John 1/3 slower.
Acts 3
17 καὶ νῦν, ἀδελφοί, οἶδα ὅτι κατὰ ἄγνοιαν ἐπράξατε ὥσπερ καὶ οἱ ἄρχοντες ὑμῶν
18 ὁ δὲ θεός, ἃ προκατήγγειλεν διὰ στόματος πάντων τῶν προφητῶν παθεῖν τὸν χριστὸν αὐτοῦ, ἐπλήρωσεν οὕτως.
19 μετανοήσατε οὖν καὶ ἐπιστρέψατε εἰς τὸ ἐξαλειφθῆναι ὑμῶν τὰς ἁμαρτίας,
20 ὅπως ἂν ἔλθωσιν καιροὶ ἀναψύξεως ἀπὸ προσώπου τοῦ κυρίου καὶ ἀποστείλῃ τὸν προκεχειρισμένον ὑμῖν Χριστὸν Ἰησοῦν,
21 ὃν δεῖ οὐρανὸν μὲν δέξασθαι ἄχρι χρόνων ἀποκαταστάσεως πάντων ὧν ἐλάλησεν ὁ θεὸς διὰ στόματος τῶν ἁγίων ἀπ᾽ αἰῶνος αὐτοῦ προφητῶν.
22 Μωϋσῆς μὲν εἶπεν ὅτι Προφήτην ὑμῖν ἀναστήσει κύριος ὁ θεὸς ὑμῶν ἐκ τῶν ἀδελφῶν ὑμῶν ὡς ἐμέ· αὐτοῦ ἀκούσεσθε κατὰ πάντα ὅσα ἂν λαλήσῃ πρὸς ὑμᾶς.
23 ἔσται δὲ πᾶσα ψυχὴ ἥτις ἐὰν μὴ ἀκούσῃ τοῦ προφήτου ἐκείνου ἐξολεθρευθήσεται ἐκ τοῦ λαοῦ.
24 καὶ πάντες δὲ οἱ προφῆται ἀπὸ Σαμουὴλ καὶ τῶν καθεξῆς ὅσοι ἐλάλησαν καὶ κατήγγειλαν τὰς ἡμέρας ταύτας.
25 ὑμεῖς ἐστε οἱ υἱοὶ τῶν προφητῶν καὶ τῆς διαθήκης ἧς διέθετο ὁ θεὸς πρὸς τοὺς πατέρας ὑμῶν λέγων πρὸς Ἀβραάμ, Καὶ ἐν τῷ σπέρματί σου ἐνευλογηθήσονται πᾶσαι αἱ πατριαὶ τῆς γῆς.
26 ὑμῖν πρῶτον ἀναστήσας ὁ θεὸς τὸν παῖδα αὐτοῦ ἀπέστειλεν αὐτὸν εὐλογοῦντα ὑμᾶς ἐν τῷ ἀποστρέφειν ἕκαστον ἀπὸ τῶν πονηριῶν ὑμῶν.Third, practice pronouncing these verses, phrase by phrase, with John.
17 καὶ νῦν, ἀδελφοί, οἶδα ὅτι κατὰ ἄγνοιαν ἐπράξατε ὥσπερ καὶ οἱ ἄρχοντες ὑμῶν
18 ὁ δὲ θεός, ἃ προκατήγγειλεν διὰ στόματος πάντων τῶν προφητῶν παθεῖν τὸν χριστὸν αὐτοῦ, ἐπλήρωσεν οὕτως.
19 μετανοήσατε οὖν καὶ ἐπιστρέψατε εἰς τὸ ἐξαλειφθῆναι ὑμῶν τὰς ἁμαρτίας,
20 ὅπως ἂν ἔλθωσιν καιροὶ ἀναψύξεως ἀπὸ προσώπου τοῦ κυρίου καὶ ἀποστείλῃ τὸν προκεχειρισμένον ὑμῖν Χριστὸν Ἰησοῦν,
21 ὃν δεῖ οὐρανὸν μὲν δέξασθαι ἄχρι χρόνων ἀποκαταστάσεως πάντων ὧν ἐλάλησεν ὁ θεὸς διὰ στόματος τῶν ἁγίων ἀπ᾽ αἰῶνος αὐτοῦ προφητῶν.
22 Μωϋσῆς μὲν εἶπεν ὅτι Προφήτην ὑμῖν ἀναστήσει κύριος ὁ θεὸς ὑμῶν ἐκ τῶν ἀδελφῶν ὑμῶν ὡς ἐμέ· αὐτοῦ ἀκούσεσθε κατὰ πάντα ὅσα ἂν λαλήσῃ πρὸς ὑμᾶς.
23 ἔσται δὲ πᾶσα ψυχὴ ἥτις ἐὰν μὴ ἀκούσῃ τοῦ προφήτου ἐκείνου ἐξολεθρευθήσεται ἐκ τοῦ λαοῦ.
24 καὶ πάντες δὲ οἱ προφῆται ἀπὸ Σαμουὴλ καὶ τῶν καθεξῆς ὅσοι ἐλάλησαν καὶ κατήγγειλαν τὰς ἡμέρας ταύτας.
25 ὑμεῖς ἐστε οἱ υἱοὶ τῶν προφητῶν καὶ τῆς διαθήκης ἧς διέθετο ὁ θεὸς πρὸς τοὺς πατέρας ὑμῶν λέγων πρὸς Ἀβραάμ, Καὶ ἐν τῷ σπέρματί σου ἐνευλογηθήσονται πᾶσαι αἱ πατριαὶ τῆς γῆς.
26 ὑμῖν πρῶτον ἀναστήσας ὁ θεὸς τὸν παῖδα αὐτοῦ ἀπέστειλεν αὐτὸν εὐλογοῦντα ὑμᾶς ἐν τῷ ἀποστρέφειν ἕκαστον ἀπὸ τῶν πονηριῶν ὑμῶν.
...to learn whatever you can from them.